55000061 has 8 divisors (see below), whose sum is σ = 58475520. Its totient is φ = 51614992.

The previous prime is 55000031. The next prime is 55000069. The reversal of 55000061 is 16000055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55000061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21341 + ... + 23778.

It is an arithmetic number, because the mean of its divisors is an integer number (7309440).

Almost surely, 2^55000061 is an apocalyptic number.

It is an amenable number.

55000061 is a deficient number, since it is larger than the sum of its proper divisors (3475459).

55000061 is a wasteful number, since it uses less digits than its factorization.

55000061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45195.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 55000061 is about 7416.2025997137. The cubic root of 55000061 is about 380.2953866701.

The spelling of 55000061 in words is "fifty-five million, sixty-one", and thus it is an aban number and an uban number.